You will die from prolonged unprotected exposure to ~110F at 100% RH because your core temp will rise due to the fact that sweating does not cool the skin, for example. People die in saunas or steam baths like this all the time. They stay too long, overheat and die.

You could have your hand in 5000F for 30 seconds and still survive - minus a hand. It would cauterize. Ditto hand in liquid nitrogen for 30 seconds. If you contained bleeding after your hand cracked off.